Manannan passengers are being reminded crossings on the craft today will take longer than usual.
The Steam Packet Company says due to a technical fault the vessel is running on reduced power.
As a result, the 3pm service to Liverpool and it's return to the Island for 7.15pm are both expected to take around four hours to complete their respective journeys.
There were issues over the weekend which saw the fastcraft leave Douglas on Saturday morning using three engines after the fourth had failed.
Later that afternoon a reported hydraulic failure with the ramp meant car drivers were unable to leave the boat on Merseyside.